TY - JOUR
T1 - Infrared anomaly of dc Josephson current in super/charge density wave/super Josephson junctions
AU - Sano, K.
AU - Kurihara, S.
PY - 2001/4
Y1 - 2001/4
N2 - We calculate dc Josephson current through charge density wave (CDW) region connected to two superconductors (S1, S2) by tunnel junctions at zero temperature. We discover infrared anomaly of the dc Josephson current caused by phase mode in the long junction limit. In this limit, the Josephson current is proportional to the characteristic energy consisting of physical quantities in CDW region, while in the short junction limit, the Josephson current is similar to the Ambegaokar-Baratoff formula which is proportional to the energy gap of superconductor.
AB - We calculate dc Josephson current through charge density wave (CDW) region connected to two superconductors (S1, S2) by tunnel junctions at zero temperature. We discover infrared anomaly of the dc Josephson current caused by phase mode in the long junction limit. In this limit, the Josephson current is proportional to the characteristic energy consisting of physical quantities in CDW region, while in the short junction limit, the Josephson current is similar to the Ambegaokar-Baratoff formula which is proportional to the energy gap of superconductor.
KW - Charge density wave
KW - Collective mode
KW - Electron-phase mode interaction
KW - Infrared anomaly
KW - Josephson junctions
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U2 - 10.1016/S0921-4534(00)01730-5
DO - 10.1016/S0921-4534(00)01730-5
M3 - Article
AN - SCOPUS:0035306291
SN - 0921-4534
VL - 352
SP - 223
EP - 227
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - 1-4
ER -